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Class Legality

IJSBA · Hull and handling

Replacement bumpers and water-spray deflectors, IJSBA

Legal in every class.

This page is IJSBA only, and the bodies do not agree. The same part under IHRA. Which one applies to you is decided by whoever sanctions the race you enter.


Where it stands, class by class

20 classes, grouped where the same rule gives the same answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.

What each answer below means

Legal, with conditions
Keep it, but measure it: the rules permit this part only inside stated limits.

Legal, with conditions 20 classes

Replacement bumpers allowed provided no hazard is created. A soft flexible water-spray deflector may attach to the hull sides or bond flange, not extending beyond the perimeter of the OE bumper or side moldings as measured by plumb line. A permanently affixed IJSBA-approved nose bumper is REQUIRED under · GEN.8.12.


Replacement bumpers and water-spray deflectors: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.

Every IJSBA class · where the rulebooks differ · checks on parts the shop sells · how this site reads a rulebook.

Hull and handling · two and four stroke · legal in 20 of 20 answered, all with conditions

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